DenverExchange would be a good fit for a Denver Internet Exchange. One IX is now using a dashed .org domain and I think it would be an upgrade. A lot of Internet Exchanges are commercial entities nowadays, so the .com extension would be a good fit. There are several IXes in the Denver area.
So you should wait for one potential user if they ever come, if they like the price, if they don't think you are a cybersquatter etc.. Good sign that thedenverexhange is registered, but still..